habanalabs: use 1U when shifting bits

Eliminate following warning:
warning: Shifting signed 32-bit value by 31 bits is undefined behavior

Reported-by: kernel test robot <lkp@intel.com>
Reviewed-by: Tomer Tayar <ttayar@habana.ai>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>